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Construction crews ready for start of Carmageddon 2 Friday night

Carmageddon 2 kicks off Friday, Sept. 28 at 7 p.m. when crews will shut down ramps along the 405 freeway in Los Angeles. As part of the same project in July 2011, workers demolished the south side of Mulholland overpass on the 405 freeway. David McNew/Getty Images